mirror of
https://github.com/crskycode/GARbro.git
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383 lines
14 KiB
C#
383 lines
14 KiB
C#
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//! \file ImagePL4.cs
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//! \date 2023 Sep 23
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//! \brief Pearl Soft image format.
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//
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// Copyright (C) 2023 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using GameRes.Utility;
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using System;
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using System.ComponentModel.Composition;
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using System.IO;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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// [980424][Pearl Soft] Watashi
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namespace GameRes.Formats.Pearl
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{
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internal class Pl4MetaData : ImageMetaData
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{
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public ushort CompressionMethod;
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}
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[Export(typeof(ImageFormat))]
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public class Pl4Format : ImageFormat
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{
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public override string Tag => "PL4";
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public override string Description => "Pearl Soft image format";
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public override uint Signature => 0x20344C50; // 'PL4 '
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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var header = file.ReadHeader (0x10);
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int version = header.ToUInt16 (4);
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if (version != 1)
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return null;
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var info = new Pl4MetaData {
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Width = header.ToUInt16 (0xC) * 8u,
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Height = header.ToUInt16 (0xE),
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CompressionMethod = header.ToUInt16 (6),
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BPP = 8,
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};
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if (info.CompressionMethod > 1)
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return null;
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return info;
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}
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public override ImageData Read (IBinaryStream file, ImageMetaData info)
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{
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var reader = new Pl4Reader (file, (Pl4MetaData)info);
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return reader.Unpack();
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}
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public override void Write (Stream file, ImageData image)
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{
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throw new System.NotImplementedException ("Pl4Format.Write not implemented");
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}
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}
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internal class Pl4Reader
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{
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IBinaryStream m_input;
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Pl4MetaData m_info;
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int m_stride;
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public Pl4Reader (IBinaryStream input, Pl4MetaData info)
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{
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m_input = input;
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m_info = info;
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m_stride = m_info.iWidth;
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}
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public ImageData Unpack ()
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{
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m_input.Position = 0x10;
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var palette = ReadPalette (16);
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var pixels = new byte[m_stride * m_info.iHeight];
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m_input.Position = 0x40;
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if (m_info.CompressionMethod == 0)
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UnpackV0 (pixels);
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else if (m_info.CompressionMethod == 1)
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UnpackV1 (pixels);
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return ImageData.Create (m_info, PixelFormats.Indexed8, palette, pixels, m_stride);
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}
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BitmapPalette ReadPalette (int colors)
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{
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var color_data = m_input.ReadBytes (colors * 3);
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var color_map = new Color[colors];
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int src = 0;
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for (int i = 0; i < colors; ++i)
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{
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color_map[i] = Color.FromRgb ((byte)(color_data[src ] * 0x11),
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(byte)(color_data[src+1] * 0x11),
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(byte)(color_data[src+2] * 0x11));
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src += 3;
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}
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return new BitmapPalette (color_map);
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}
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void UnpackV0 (byte[] output)
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{
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int height = m_info.iHeight;
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int x = m_info.iWidth / 4;
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int output_size = height * m_stride;
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int row = 0;
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int dst = 0;
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int ctl, word;
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while ((ctl = m_input.ReadByte()) != -1)
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{
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byte next = m_input.ReadUInt8();
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if (0x98 == ctl)
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{
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ctl = m_input.ReadUInt8();
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if (0 == next)
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{
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next = m_input.ReadUInt8();
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}
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else
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{
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word = ctl << 8 | next;
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int count = ((word >> 1) & 0x1F) + 2;
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int src_y;
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int src_x = Math.DivRem ((word >> 6) + 1, height, out src_y);
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int src = dst - src_y * m_stride - 4 * src_x;
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src_y = row - src_y;
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if (src_y < 0)
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{
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src_y += height;
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src += output_size - 4;
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}
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while (count --> 0)
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{
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output[dst ] = output[src ];
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output[dst+1] = output[src+1];
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output[dst+2] = output[src+2];
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output[dst+3] = output[src+3];
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dst += m_stride;
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if (++row >= height)
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{
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row = 0;
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dst -= output_size - 4;
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if (--x <= 0)
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return;
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}
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src += m_stride;
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if (++src_y >= height)
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{
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src_y = 0;
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src -= output_size - 4;
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}
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}
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continue;
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}
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}
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word = next << 8 | ctl;
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int px = 0;
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if ((word & 0x1000) != 0) px = 0x01000000;
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if ((word & 0x2000) != 0) px |= 0x00010000;
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if ((word & 0x4000) != 0) px |= 0x00000100;
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if ((word & 0x8000) != 0) px |= 0x00000001;
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if ((word & 0x0100) != 0) px |= 0x02000000;
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if ((word & 0x0200) != 0) px |= 0x00020000;
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if ((word & 0x0400) != 0) px |= 0x00000200;
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if ((word & 0x0800) != 0) px |= 0x00000002;
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if ((word & 0x0010) != 0) px |= 0x04000000;
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if ((word & 0x0020) != 0) px |= 0x00040000;
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if ((word & 0x0040) != 0) px |= 0x00000400;
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if ((word & 0x0080) != 0) px |= 0x00000004;
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if ((word & 0x0001) != 0) px |= 0x08000000;
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if ((word & 0x0002) != 0) px |= 0x00080000;
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if ((word & 0x0004) != 0) px |= 0x00000800;
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if ((word & 0x0008) != 0) px |= 0x00000008;
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LittleEndian.Pack (px, output, dst);
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dst += m_stride;
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if (++row >= height)
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{
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row = 0;
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dst -= output_size - 4;
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if (--x <= 0)
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break;
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}
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}
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}
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byte[] m_pixelBuffer;
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MsbBitStream m_bits;
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void UnpackV1 (byte[] output)
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{
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m_pixelBuffer = InitLineBuffer();
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int height = m_info.iHeight;
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int dst = 0;
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int output_size = m_stride * height;
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int x = m_info.iWidth / 8;
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int y = 0;
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using (m_bits = new MsbBitStream (m_input.AsStream, true))
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{
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int p1 = 0, p2 = 0, p3 = 0, p4 = 0;
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int ctl_bit;
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while ((ctl_bit = m_bits.GetNextBit()) != -1)
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{
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if (ctl_bit != 0)
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{
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int src = dst;
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int src_y = y;
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switch (m_bits.GetBits (2))
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{
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case 0:
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src_y = y - 2;
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src = dst - 2 * m_stride;
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break;
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case 1:
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src_y = y - 1;
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src = dst - m_stride;
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break;
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case 2:
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src_y = y - 4;
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src = dst - 4 * m_stride;
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break;
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case 3:
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src = dst - 8;
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break;
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}
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if (src_y < 0)
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{
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src_y += height;
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src += output_size - 8;
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}
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int count_length = 0;
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while (m_bits.GetNextBit() == 0)
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++count_length;
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int count = 1;
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if (count_length != 0)
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{
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count = m_bits.GetBits (count_length) | 1 << count_length;
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}
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while (count --> 0)
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{
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Buffer.BlockCopy (output, src, output, dst, 8);
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dst += m_stride;
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if (++y >= height)
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{
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y = 0;
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dst -= output_size - 8;
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if (--x <= 0)
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return;
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}
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src += m_stride;
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if (++src_y >= height)
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{
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src_y = 0;
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src -= output_size - 8;
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}
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}
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}
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else
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{
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int px1 = 0;
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int px2 = 0;
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p1 = UpdatePixel (p1);
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p2 = UpdatePixel (p2);
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p3 = UpdatePixel (p3);
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p4 = UpdatePixel (p4);
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if ((p1 & 0x80) != 0) px1 = 0x00000001;
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if ((p1 & 0x40) != 0) px1 |= 0x00000100;
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if ((p1 & 0x20) != 0) px1 |= 0x00010000;
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if ((p1 & 0x10) != 0) px1 |= 0x01000000;
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if ((p1 & 0x08) != 0) px2 = 0x00000001;
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if ((p1 & 0x04) != 0) px2 |= 0x00000100;
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if ((p1 & 0x02) != 0) px2 |= 0x00010000;
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if ((p1 & 0x01) != 0) px2 |= 0x01000000;
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if ((p2 & 0x80) != 0) px1 |= 0x00000002;
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if ((p2 & 0x40) != 0) px1 |= 0x00000200;
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if ((p2 & 0x20) != 0) px1 |= 0x00020000;
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if ((p2 & 0x10) != 0) px1 |= 0x02000000;
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if ((p2 & 0x08) != 0) px2 |= 0x00000002;
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if ((p2 & 0x04) != 0) px2 |= 0x00000200;
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if ((p2 & 0x02) != 0) px2 |= 0x00020000;
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if ((p2 & 0x01) != 0) px2 |= 0x02000000;
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if ((p3 & 0x80) != 0) px1 |= 0x00000004;
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if ((p3 & 0x40) != 0) px1 |= 0x00000400;
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if ((p3 & 0x20) != 0) px1 |= 0x00040000;
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if ((p3 & 0x10) != 0) px1 |= 0x04000000;
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if ((p3 & 0x08) != 0) px2 |= 0x00000004;
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if ((p3 & 0x04) != 0) px2 |= 0x00000400;
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if ((p3 & 0x02) != 0) px2 |= 0x00040000;
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if ((p3 & 0x01) != 0) px2 |= 0x04000000;
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if ((p4 & 0x80) != 0) px1 |= 0x00000008;
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if ((p4 & 0x40) != 0) px1 |= 0x00000800;
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if ((p4 & 0x20) != 0) px1 |= 0x00080000;
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if ((p4 & 0x10) != 0) px1 |= 0x08000000;
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if ((p4 & 0x08) != 0) px2 |= 0x00000008;
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if ((p4 & 0x04) != 0) px2 |= 0x00000800;
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if ((p4 & 0x02) != 0) px2 |= 0x00080000;
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if ((p4 & 0x01) != 0) px2 |= 0x08000000;
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LittleEndian.Pack (px1, output, dst);
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LittleEndian.Pack (px2, output, dst+4);
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dst += m_stride;
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if (++y >= height)
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{
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y = 0;
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dst -= output_size - 8;
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if (--x <= 0)
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break;
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}
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}
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}
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}
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}
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int UpdatePixel (int pixel)
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{
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byte nibble = GetNextPixel (pixel);
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return GetNextPixel (nibble) | nibble << 4;
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}
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byte GetNextPixel (int pixel)
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{
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int bits = GetPixelBits();
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int prior = (pixel & 0xF) << 4;
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byte next = m_pixelBuffer[prior+bits];
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int pos = prior + bits;
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if (bits == 0)
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return next;
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while (bits --> 0)
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{
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m_pixelBuffer[pos] = m_pixelBuffer[pos - 1];
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--pos;
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}
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return m_pixelBuffer[prior] = next;
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}
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int GetPixelBits ()
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{
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if (m_bits.GetNextBit() != 0)
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{
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return m_bits.GetBits (1);
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}
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else if (m_bits.GetNextBit() != 0)
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{
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return m_bits.GetBits (1) + 2;
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}
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else if (m_bits.GetNextBit() != 0)
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{
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|
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return m_bits.GetBits (2) + 4;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return m_bits.GetBits (3) + 8;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static byte[] InitLineBuffer ()
|
||
|
|
{
|
||
|
|
var buffer = new byte[256];
|
||
|
|
for (int i = 0; i < 256; ++i)
|
||
|
|
{
|
||
|
|
buffer[i] = (byte)((i + (i >> 4)) & 0xF);
|
||
|
|
}
|
||
|
|
return buffer;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|